Improvement in plows



' A. HALL.

PLoW. 170.171,47?. Patented nec. 28,1875.

N.FETERS, PHOTO-LTHOGRAPMER. WASHINGTON. D C.

` UNITED STATES PATENT OFFICE.

AsA HALL, oE EocKEoED, iLLiNoIs, Assienon To EiMsELE, JOHN e.

ELLIOTT, AND EDWARD D. HALL, 0E sAME PLAGE.

IMPROVEMENT IN PLows.

Specification forming part of Letters Patent No. 171,477), dated December 28, 1875; application filed 1 Y September 13, i875. 4

To all whom it may concern:

Be it known that I, ASA HALL, of the cityr of Rockford, State of Illinois, have invented certain Improvements in Plows, of which the following is a specication:

In the use of plows it is found that the mold-boards areuneq-ually worn, the forward lower portion, forming the shin, being worn through, while the rear upward portion shows but little wear. To render the plow more serviceable in this and other respects, which I now proceed to describe, forms the subject- .matter of this patent.

In the drawings, Figure l is aplan view oia plow embodying my invention. Figs. 2 and 3 represent similar viewsof the share and a portion of the land-side. Fig. 4 isa face view of the mold-board. Figs. 5 and 6 represent the rear land-side. Fig. 7 is an isometrical view from the point of the share and landside. In the gures, A is the share, which is welded onto theupper edge of the short landside B, which was previously welded onto the land-side of the inner land-side bar C. Fig. 5 is a side and Fig. 6 an edge view of the rear land-side, which is flttedin place and secured by bolts, as at D, Figs. l and 3. k is a brace secured to theland-side and share, and forms the lug l, which, with lugl, are provided with holes to receive the bolts to hold the moldboard in place. h is a standard secured to the inside of the land-side, the upper end of which is fitted to receive' the beam.

All oi' the above, together with the necessary handles secured in plac'e, are substantially the same as found in plo-ws now in coinmon use.

Fig. 4 represents a mold-board made reversible, having its radial opposite sides at all points equidistant from a common center, and its radial opposite sides bounded by lines in 4every particular practically the same, and is curved in such a manner that its opposite halves, from a right line cutting its common center, will be substantially identical, and is of such form that its opposite edges d are made to form a practical joint with the edge f of the share A, whether it be straight or curved,

, and its opposite edges g are made to form a shin line with the face of the land-side, and the bolt-holes radially opposite each other are equidistant from the common center. The curved -dotted lines fm are designed to represent nearly the line of the greatest wear on the mold-board, which is greatest at the forward end, and diminishes as it curves upward and rearward. When the mold-boards are made of wrought or rolled material, as plates of steel, I prefer to cut the blank forms from plate-bars of proper width to make a moldboard, so that the edges d will coincide with the edges of the plate. The curved lines g, forming the ends of the mold-board, are such that when so cut there will be little or no Waste of material. The blanks are then formed of proper curve, punched or bored, and fitted, tempered, and polished,` as it is usual to prepare such work, the processes of which are Well known, and need not be described here.

The object ofthis part of my invention is to produce a plow provided with a mold-board of such configuration, and fitted in such a manner, that after having rendered service nearly equal t0 the plow of the present, and being well worn, the mold-board may be reversed, placing the rear end forward, and the upper edge downward, and which can be secured in place `and made ready for use without the aid of a mechanic, and, so far as respects the mold-board, will be iitted to render additional service nearly equal to a new plow.

In the construction of plows I also use caststeel and cast-iron, in which case I prefer to make the share A and short land-side B in oneipiece, with the shin portion of the share curved, as at b, Fig. 2, and also the ends of the mold-'board curved, as in dotted lines b, Fig. 4, and made to iit the curved share. The share may also be made of plate material, and curved, as at b butI prefer to make the curved portion b on the land-side, in which case I 'cut the land-side blank, Fig. 5, with the portion b, (seen in dotted lines,) which, being heated and bent, as seen in dotted lines b", Fig. 6, which is then itted onto the inner land-side bar G, as at l), and in dotted linesin Fig. 7, in such a manner that the .straight side of the portion b will tit the straight side ofthe share, and its curved side receive the curved ends ofthe mold-board.

In constructing plows as above described, I am enabled to combine plate and cast material in nia-ny different combinations required 'for the dierent soils in different localities,

such as plate-steel, east-steel, cast-iron, Ste., in all the different-parts of the plow.

I am aware of the use of reversible moldboards, but that they have been made in one piece withthe share. I therefore do not claim to be the first to construct a plow with a reversible mold-board in its broadest sense; but

I claim as my invention- In combination with a plowsbare, a plow mold-board constructed -substantially as de- `scrbed,with its opposite edges d fitted to the ASA HALL.

Witnesses:

H. H. PALMER, J. G. ELLIOTT. 

